diff options
Diffstat (limited to 'Foundation/GTMObjC2Runtime.h')
| -rw-r--r-- | Foundation/GTMObjC2Runtime.h | 41 |
1 files changed, 36 insertions, 5 deletions
diff --git a/Foundation/GTMObjC2Runtime.h b/Foundation/GTMObjC2Runtime.h index f901d1e..8d62abf 100644 --- a/Foundation/GTMObjC2Runtime.h +++ b/Foundation/GTMObjC2Runtime.h @@ -49,11 +49,8 @@ #if MAC_OS_X_VERSION_MIN_REQUIRED < MAC_OS_X_VERSION_10_5 #import "objc/Protocol.h" +#import <libkern/OSAtomic.h> -#ifdef __cplusplus -extern "C" { -#endif - OBJC_EXPORT Class object_getClass(id obj); OBJC_EXPORT const char *class_getName(Class cls); OBJC_EXPORT BOOL class_conformsToProtocol(Class cls, Protocol *protocol); @@ -67,7 +64,41 @@ OBJC_EXPORT struct objc_method_description protocol_getMethodDescription(Protoco SEL aSel, BOOL isRequiredMethod, BOOL isInstanceMethod); -#ifdef __cplusplus + +// If building for 10.4 but using the 10.5 SDK, don't include these. +#if MAC_OS_X_VERSION_MAX_ALLOWED < MAC_OS_X_VERSION_10_5 +// atomics +// On Leopard these are GC aware +// Intentionally did not include the non-barrier versions, because I couldn't +// come up with a case personally where you wouldn't want to use the +// barrier versions. +GTM_INLINE bool OSAtomicCompareAndSwapPtrBarrier(void *predicate, + void *replacement, + volatile void *theValue) { +#if defined(__LP64__) && __LP64__ + return OSAtomicCompareAndSwap64Barrier((int64_t)predicate, + (int64_t)replacement, + (int64_t *)theValue); +#else // defined(__LP64__) && __LP64__ + return OSAtomicCompareAndSwap32Barrier((int32_t)predicate, + (int32_t)replacement, + (int32_t *)theValue); +#endif // defined(__LP64__) && __LP64__ +} + +GTM_INLINE BOOL objc_atomicCompareAndSwapGlobalBarrier(id predicate, + id replacement, + volatile id *objectLocation) { + return OSAtomicCompareAndSwapPtrBarrier(predicate, + replacement, + objectLocation); +} +GTM_INLINE BOOL objc_atomicCompareAndSwapInstanceVariableBarrier(id predicate, + id replacement, + volatile id *objectLocation) { + return OSAtomicCompareAndSwapPtrBarrier(predicate, + replacement, + objectLocation); } #endif |